- Create new API endpoint api/fetch-uk-inventory.ts
- Add processUKInventoryExcel function in dataProcessor.ts
- Update handleVendorStockFetch to load PANEU + UK in parallel
- Configure Vite proxy for UK inventory endpoint
- UK stock correctly populates 'uk' field in vendorStockMap
- App.tsx: Always calculate both EU and UK Top 50 maps.
- WeeklyGrid.tsx: Added top50Mode state and EU/UK toggle.
- WeeklyGrid.tsx: Updated filtering and sorting to respect the selected Top 50 mode.
- WeeklyGrid.tsx: Enhanced product badges to show selected group rank.
- api/fetch-traffic.ts: New endpoint to fetch Traffic Weekly.xlsx from Dropbox
- App.tsx: Added handleTrafficFetch function and auto-fetch on initialization
- types.ts: Added TrafficRecord interface and glanceViews field to CombinedKPIs
- dataProcessor.ts: Added processTrafficExcel parser for Traffic Weekly.xlsx
- dataProcessor.ts: Updated mergeSalesAndAdsData to accept and merge traffic data
- App.tsx: Added trafficData state and handleTrafficUpload handler
- FileUpload.tsx: Added Traffic file upload section for GV data
- AdsPerformance.tsx: Added GV and CVR(GV) summary cards
- AdsPerformance.tsx: Added GV column to product table
- AdsPerformance.tsx: Automatically activate comparison view when 2 periods are selected
- AdsPerformance.tsx: Add growth percentages and trend indicators to table and summary
- AdsPerformance.tsx: Implement chronological sorting for previous vs current periods
- App.tsx: Pass filters to AdsPerformance component
- types.ts: Add conversions field to CombinedKPIs
- dataProcessor.ts: Populate conversions in mergeSalesAndAdsData
- AdsPerformance.tsx: New component with aggregated advertising metrics and detailed product table
- App.tsx: Add Ads view to switcher and render AdsPerformance component
- Icons.tsx: Added icon support for the new Ads tab
- App.tsx: Add globalAsinMetadata to provide context for ad filtering
- dataProcessor.ts: Update filterAdsData to respect product line filters via metadata
- dataProcessor.ts: Update mergeSalesAndAdsData to use global metadata for ads-only records
- Ensures consistent calculation of totals and visibility when filtering by Line or ASIN
- App.tsx: Update top50Ranking2025 to calculate ranks based on active country filters
- App.tsx: Add split Pan-EU vs UK ranking when no filters are active
- WeeklyGrid.tsx: Add support for multiple ranking badges (EU/UK)
- WeeklyGrid.tsx: Enhance Top50Badge with labels and color themes
- WeeklyGrid.tsx: Update sorting and filtering logic for new ranking structure
- Calculate static Top 50 ranking based on 2025 Sell Out (independent of filters)
- Display trophy badge with position number for Top 50 ASINs
- Badge shows 🏆 followed by rank (1-50)
- Ranking stays static regardless of date/country filters applied
- Pre-computed ranking based on cumulative 2025 data
- Use React.lazy for DataGrid, WeeklyGrid, and TopMovers
- Add Suspense with LoadingSpinner fallback for smooth transitions
- Enables code splitting for faster initial page load
- Combined with previous O(n²) fix, should significantly improve performance
- Refactored mergeSalesAndAdsData to aggregate by ASIN+Customer+Year+Week
- Each ASIN/Week now produces exactly one output record
- Updated pivotWeeklySalesData to use ASIN as primary key
- Fixed double-counting when same ASIN had multiple SKUs
- Added support for ads-only records (ASINs with spend but no sales)
- Changed App.tsx to use filtered ads data for accurate totals
